21936271

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:295

約数の個数: 24

約数和(自身を含む): 26717040

約数和(自身を除く): 4780769

約数列:

[1, 7, 41, 49, 61, 179, 287, 427, 1253, 2009, 2501, 2989, 7339, 8771, 10919, 17507, 51373, 76433, 122549, 359611, 447679, 535031, 3133753, 21936271]

約数ペア:

[(1, 21936271), (7, 3133753), (41, 535031), (49, 447679), (61, 359611), (179, 122549), (287, 76433), (427, 51373), (1253, 17507), (2009, 10919), (2501, 8771), (2989, 7339)]